#13 illegal dependencies on coin library?

[Michael Randel]

When configuring the opengl renderer everything seems
to be fine, at least when using the option
'--without-coin' and '--without-soqt'. Then, when
starting the make procedure this fails due to some
header files (*.h), which can't be found by the system.
Make tells me that these header files should be placed
within a directory called 'Inventor'. This directory,
I've found out, is part of the coin distribution. So it
seems that this renderer depends on the coin library,
even if '--without-coin' is specified. Either there are
some internal misstakes of inclusion/excludion of
header files or this option is obsolete.

If the renderer in either case depends on the coin
library, it also should be able to use the SoWin module
to ensure functionality on windows plattforms too,
because the SoQT module isn't free of charge for these
plattforms.